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Association of the LRP1 gene and cognitive performance with amnestic mild cognitive impairment in elderly Chinese

  • Yong M. Shi (a1) (a2), Hong Zhou (a1) (a2), Zhi J. Zhang (a1) (a2), Hui Yu (a1), Feng Bai (a1), Yong G. Yuan (a1) (a3), Ling L. Deng (a1) and Jian P. Jia (a4)...

Abstract

Background: The genetic region coding for low-density lipoprotein receptor-related protein1 (LRP1) is considered an intriguing susceptibility locus for Alzheimer's disease (AD). Amnestic mild cognitive impairment (aMCI) is characterized by episodic memory impairment and represents the prodromal stage of AD. Our aim in this study is to investigate the relationship between LRP1 genetic variation and aMCI, and the influence of LRP1 on cognitive performance.

Methods: We performed a case-control association study analyzing five polymorphisms in LRP1 gene by TaqMan Assays-on-Demand SNP Genotyping. All samples were derived from Chinese subjects (109 cases, 104 healthy controls) and assessed using multi-dimension neuropsychological instruments.

Results: We identified haplotypes within the region containing the LRP1 gene. Of these, haplotype TAA (T: rs1800194; A: rs11837145; A: rs10876967) was significantly associated with aMCI, being over-represented in aMCI versus healthy controls. Haplotype TAA was associated with poor performance on episodic memory in all subjects.

Conclusions: This study confirms the association between genetic variants in LRP1 and aMCI. Moreover, we have identified a relationship between LRP1 genetic variation and specific aspects of neurocognitive function. Our convergent results suggest that LRP1 plays an important role in cognitive function and possibly in the pathogenesis of aMCI.

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Corresponding author

Correspondence should be addressed to: Zhi J. Zhang, M.D., Ph.D., Department of Neurology, affiliated ZhongDa Hospital of Southeast University, No. 87 DingJiaQiao Road, Nanjing, PR China, 210009. Phone: +86–25-83272023; Fax: +86–25-83272023. Email: zhijunzhang838@yahoo.com.cn.

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Association of the LRP1 gene and cognitive performance with amnestic mild cognitive impairment in elderly Chinese

  • Yong M. Shi (a1) (a2), Hong Zhou (a1) (a2), Zhi J. Zhang (a1) (a2), Hui Yu (a1), Feng Bai (a1), Yong G. Yuan (a1) (a3), Ling L. Deng (a1) and Jian P. Jia (a4)...

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